Wally is finally here to give you a massive amount of wallpapers!
Utilizing Google’s Material Design principles, Wally is meant to give you a perfectly fluid user flow with subtle animations and bright colors. Using wallhaven.cc as the source of wallpapers, you have a really neat set of tools to find just what you’re looking for.

Wally uses the popular website Wallhaven (http://wallhaven.cc) as its source of wallpapers. What's Wallhaven you say?
"Wallhaven is a site created by and for people who like wallpapers, as well as a place where anime fans can be treated mostly like normal human beings. The original idea was to make an alternative to wallbase.cc that could become a site in its own right."

Wally is open source and can be located at https://github.com/Musenkishi/wally.